Could not load file or assembly <project> or one of its dependencies. Used by another process

Could not load file or assembly 'Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The process cannot access the file because it is being used by another process. (Exception from HRESULT: 0x80070020)

Hi, i get this error when trying to "enable-migrations" on my infrastructure project which contains the EntityFramework reference.

This is a fresh project, that i created to debug my ASP.NET MVC project, which gives me the same error.

This is the project structure of my basic (new) console application:

I have tried re-installing SQL server and clean/rebuild solution.

Im running on VS2015.

PS: Dont mind the logic.cs file as its just a dummy function to see if it had anything to do with project referencing. (And it didnt)

Full error:

PM> enable-migrations
No packages installed.
The EntityFramework package is not installed on project 'dbfirsttest'.
PM> enable-migrations
System.IO.FileLoadException: Could not load file or assembly 'Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The process cannot access the file because it is being used by another process. (Exception from HRESULT: 0x80070020)
File name: 'Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' ---> System.IO.FileLoadException: Could not load file or assembly 'Infrastructure' or one of its dependencies. The process cannot access the file because it is being used by another process. (Exception from HRESULT: 0x80070020)
File name: 'Infrastructure'


WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

   at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean forIntrospection)
   at System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)
   at System.Reflection.Assembly.Load(String assemblyString)
   at System.Data.Entity.Migrations.Design.ToolingFacade.BaseRunner.LoadAssembly(String name)
   at System.Data.Entity.Migrations.Design.ToolingFacade.GetContextTypeRunner.Run()
   at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
   at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
   at System.Data.Entity.Migrations.Design.ToolingFacade.Run(BaseRunner runner)
   at System.Data.Entity.Migrations.Design.ToolingFacade.GetContextType(String contextTypeName)
   at System.Data.Entity.Migrations.EnableMigrationsCommand.FindContextToEnable(String contextTypeName)
   at System.Data.Entity.Migrations.EnableMigrationsCommand.<>c__DisplayClass2.<.ctor>b__0()
   at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command)


Could not load file or assembly 'Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The process cannot access the file because it is being used by another process. (Exception from HRESULT: 0x80070020)
PM> 

Any help or tips on this issue is greatly appreciated